... Days if quantity not exceed 10x20' Containers screw threaded sleeve / coupling / sockets / merchant coupling MaterialCarbon steel,Stainless ... s requestThicknessSCH10 SCH20 SCH40 SCH80 SCH160; CLASS A, CLASS B, CLASS CSurfaceHot Dipped Galvanized, Electro Galvanized, Natural finished ... , SGS, ITS, BSI,Hebei, China screw threaded sleeve, Socket and half socket,equal,type mediumNominal Size Minimum ...